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5th Grade Fractions Worksheets (Unlike Denominators)

Free printable fifth-grade fractions worksheets for adding and subtracting fractions with unlike denominators, with a built-in simplified answer key. Generate a fresh PDF every time — no signup, no limits.

Aligned to CCSS 5.NF.1 · Add & subtract fractions with unlike denominators

Fractions — Add & Subtract

Aligned to CCSS 5.NF.1 · Simplify each answer

Name: ___________________________ Date: _____________

1.15 − 112 =
2.56 + 612 =
3.13 − 26 =
4.12 − 25 =
5.56 − 512 =
6.512 + 13 =
7.34 − 210 =
8.48 − 12 =
9.12 − 14 =
10.46 − 28 =
11.28 + 12 =
12.510 + 15 =

Skills These Worksheets Practice

  • Adding and subtracting fractions with unlike denominators (CCSS 5.NF.1)
  • Finding a common denominator and building equivalent fractions
  • Simplifying a result to lowest terms
  • Rewriting improper fractions as mixed numbers
  • Reasoning about the relative size of fractions before computing

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FAQ

What fraction skills do 5th graders learn?

The headline fifth-grade fraction standard, CCSS 5.NF.1, is adding and subtracting fractions with unlike denominators — including mixed numbers — by finding a common denominator. Students also multiply and divide fractions later in the year, but fluent addition and subtraction with unlike denominators is the foundation.

How do you add fractions with unlike denominators?

Find a common denominator (any common multiple of the two denominators works), rewrite each fraction with that denominator, add or subtract the numerators, and then simplify the result to lowest terms. Every answer in this generator's key is already reduced so students can check whether they simplified correctly.

Are these worksheets really free?

Yes — every worksheet on Printable Polly is 100% free with no signup, no account, and no download limit. Choose your options, click Download PDF, and print as many fresh worksheets as you want.

Why are the answers shown as mixed numbers?

When a sum is greater than one, fifth graders are expected to write it as a mixed number in lowest terms — for example 7/4 becomes 1 3/4. The answer key follows that convention so students can compare their simplified, mixed-number answers directly.